• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

2012 TE310 Surging

Snoho310

Snoho310

Husqvarna
AA Class
Been lurking for awhile & unfortunately found a reason to post. Bought the bike new in 2012 and it was uncorked and powered up by the dealer. Had the typical starter & flame out issues and a different dealer fixed that along with re-flashing the ECU to European specs. The bike has run flawlessly until this weekend when it started to surge between 7,400 & 8,000 rpm when trying to hold rpm at cruise.Any other RPM there is no issue and when watching the tach the RPMs actually drop about 400 and then go back every 5-10 seconds. The problem does not happen if I roll through the rpms while accelerating.

Any help would be appreciated.
 
I am using Castrol RS 4T 10-50 Synthetic, the same oil since new. I would guess adjusting the CO levels would require a visit to the dealers which I am trying to avoid because I want to go riding this weekend. I was hoping a loose ground or a ecu reset by disconnecting the battery is the fix but I suppose that is wishful thinking.

Thanks for helping.

Brian
 
You might want to try switching to a lighter oil like Mobil 1 0W40. There have been some cases of oil starvation at the main bearings at sustained high RPM. I'm wondering if your surging is not an early warning. Might possibly be a failing fuel pump as well?
 
Maybe a dirty injector. Possibly some techron or other and run it through the revs a few times prior to any fueling changes. Mobil 1 0w-40 will increase idle speed at startup but not sure if would affect actually running/fueling at high rpms.
 
I had added center mount hand guards and a bar pad since I last road & went back over everything to make sure I didn't knock a wire loose. I noticed the vent hose had kinked where it goes under the pad and when releasing the gas cap I heard a little woosh. The weird thing is the problem goes away above 8,000 rpm or below 7,400 so I have a feeling it is ECU or TPS related but I will go for a ride tonight and find out.

Thanks for the help, I do have seafoam & techron might add a little it can't hurt.
Brian
 
Thanks for the warning. I am guessing WD40, Bailing wire & Duct tape also should not be used in a sentence describing a possible fix. Well at least I know a Zip Tie is not off limits.
 
did you sort this out? my 12 310 has surging problems too. only seems to happen in a certain rev range but is very noticeable. any ideas on a solution? do i need a ibeat or something? bit beyond my knowledge these efi bikes...
 
So snoho, you say your dealer reflashed a TE310 ECU? Ummm, that would be a first since they are locked and can't be re flashed. The modifications that can be done to a 2012 TE310 ECU is changing the CO levels and eliminating the lambda which doesn't do much. The only way I know to really address the poor ECU mapping is to replace the ECU with a TXC model and swap out the fuel injector to a 12 hole version. Doing this will dramatically change the bike. Re flashing to Euro mapping is a KTM thing and doesn't apply to your bike so it seems your dealer is telling you a mis truth?
 
Let me clarify the words re flash were mine not his, so I guess the correct word would be settings which he changed. The dealer only deals in European bikes so he referred to the changes as European spec. Sorry for any confusion but I am pretty sure I did not tell anyone to go out and get their ECU re flashed as a fix to a problem. To answer Bensl question the problem still persist occasionally but it is rare that I stay at that rpm for any period of time. Does anyone know if disconnecting the battery would reset the ECU & TPS?
 
I am late getting in on this but I just found something major. My 310 ran like shit till I had the 12 port and new ECU. Then it was a dog. Halls richen end it up and it ran better. Then it went back to running like shit. I am old school so I started looking at the basics. I found the throtle butterfly closing tight against the bore so I adjusted the stop screw. Better but still spit and sputtered below 8 grand. I took off the TPS/MAP/ATS and found the problem. There was gunk, grim, carbon plugging the holes that go to the MAP sensor and the O ring was dissolved in places. You can't buy the seal so after a good cleaning I took 1/16" thick O rings and supper glue and mad a seal. It is now a new bike. No spitt-n-sputter, no stalling takes off from a stop with very little throttle. :) But :mad: That the dealers did find this. The sensor is on the left side of the throttle body.
 
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